How diffrent countries analysis track geometry data?

Question

this question is abour the methods of analysing railway track geometry data(such as gauge, cross leveling, rail profile,...).

Answer 1

In Britain they use the NMT

http://en.wikipedia.org/wiki/Network_Rai...

This was inspired by Japans Dr yellow train

http://www.hochgeschwindigkeitszuege.com...

I can only find info about this train in German but you can get the page translated

other less advanced country's use Track inspection Coaches

http://www.old-dalby.com/TIC.htm

where a person views the track by eyesight or the same from a speeder,

http://pw1.netcom.com/~wparsons/

Indian railways still use Handcars

http://en.wikipedia.org/wiki/Handcar